1.	Simplify 1 Simplify the following expression: $$ {\left(1 + -3\right)}^{2} + 6\times2 - \left(3 - 4\right) $$ Correct Answer $$ 17$$ or 17.0000

2.	Simplify 2 Simplify the following expression: $$ \frac{2\times3\times1}{\left(5 - 4\right)\left(3 - -4\right)} $$ Correct Answer $$ \frac{6}{7}$$ or 0.857143

3.	Fractions 1 Simplify the following expression: $$ \frac{-5}{4} - \frac{1}{2} $$ Correct Answer $$ \frac{-7}{4}$$ or -1.75

4.	Fractions 2 Simplify the following expression: $$ \frac{-4}{6}\frac{-5}{3} $$ Correct Answer $$ \frac{10}{9}$$ or 1.1111111111111112

5.	Significant figures 1. Write the following to 4 significant figures: 7273.8594 Correct Answer 7274 or $$7.274\times10^{3}$$ 2. Write the following to 2 significant figures: 1583.1485 Correct Answer 1600 or $$1.6\times10^{3}$$

6.	Standard Form 1. Write the following in standard form to 4 significant digits: 0.0000887986 Correct Answer $$8.880\times10^{-5}$$ 2. Write the following in standard form to 3 significant digits: 10945.4 Correct Answer $$1.09\times10^{4}$$

7.	Significant figures 1. Write the following in preferred standard form to 2 significant digits: 325 Correct Answer $$330\times10^{0}$$ 2. Write the following in preferred standard form to 4 significant digits: 0.000046740 Correct Answer $$46.74\times10^{-6}$$

8.	Simplify 2 Simplify the following expression: $$ {\left(2 + 2\right)}^{2} - \frac{-4\times2}{-6 - -1} $$ Correct Answer $$ \frac{72}{5}$$ or 14.4000

9.	Simplify 1 Simplify the following expression: $$ {\left(3 + 6\right)}^{2} + 1 + -2 - 3(-2) $$ Correct Answer $$ 86$$ or 86.0000

10.	Simplify 2 Simplify the following expression: $$ 2\frac{3}{-3} - \frac{-5 - 3}{-4 + -4} $$ Correct Answer $$ -3$$ or -3.00000